Seedling growth and ectomycorrhizal colonization of Pinus patula and P. radiata inoculated with spores of Helvella lacunosa, Russula brevipes or Lycoperdon perlatum

New Forests ◽  
1991 ◽  
Vol 4 (4) ◽  
pp. 237-245 ◽  
Author(s):  
Eduardo Martinez-Amores ◽  
Maria Valdes ◽  
Manuel Quintos
2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Manuel Restrepo-Llano ◽  
Nelson W. Osorio ◽  
Juan D. León

The aim of this study was to evaluate the response ofPinus patulaseedlings to two inocula types: soil from aPinusplantation (ES) and anin vitroproduced inoculum (EM). The most probable number method (MPN) was used to quantify ectomycorrhizal propagule density (EPD) in both inocula in a 7-order dilution series ranging from 100(undiluted inoculum) to 10−6(the most diluted inoculum). The MPN method allowed establishing differences in the number of infective ectomycorrhizal propagules’ density (EPD) (ES=34per g;EM=156per g). The results suggest that the EPD of an inoculum may be a key factor that influences the successfulness of the inoculation. The low EPD of the ES inoculum suggests that soil extracted from forest plantations had very low effectiveness for promoting root colonization and plant growth. In contrast, the high EPD found in the formulated inoculum (EM) reinforced the idea that it is better to use proven high quality inocula for forest nurseries than using soil from a forestry plantation.


2005 ◽  
Vol 208 (1-3) ◽  
pp. 399-405 ◽  
Author(s):  
M.M.D. Tennakoon ◽  
I.A.U.N. Gunatilleke ◽  
K.M. Hafeel ◽  
G. Seneviratne ◽  
C.V.S. Gunatilleke ◽  
...  

1991 ◽  
Vol 72 (4) ◽  
pp. 307-316 ◽  
Author(s):  
A.H. Chappelka ◽  
J.S. Kush ◽  
G.B. Runion ◽  
S. Meier ◽  
W.D. Kelley

1987 ◽  
Vol 17 (10) ◽  
pp. 1153-1156 ◽  
Author(s):  
R. J. Mitchell ◽  
H. E. Garrett ◽  
G. S. Cox ◽  
A. Atalay ◽  
R. K. Dixon

Shortleaf pine (Pinusechinata Mill.) seedlings inoculated with Pisolithustinctorius (Pers.) Coker and Couch or left uninoculated were grown in book planters for 16 weeks. Seedlings were fertilized with 25 μg mL−1 of borate applied to the foliage as a mist, to the soil as a solution, or to both the foliage and the soil. B applied to the foliage or to the soil significantly increased ectomycorrhizal colonization of roots and seedling growth. Growth of uninoculated seedlings was not enhanced by B fertilization. The lack of growth response of uninoculated seedlings as contrasted with increased infection and growth of inoculated seedlings suggests that B affects the fungal symbiont or the plant host–symbiont combination to a greater extent than the plant host alone.


2008 ◽  
Vol 28 (4) ◽  
pp. 629-636 ◽  
Author(s):  
J. D. Lewis ◽  
J. Licitra ◽  
A. R. Tuininga ◽  
A. Sirulnik ◽  
G. D. Turner ◽  
...  

2010 ◽  
Vol 341 (1-2) ◽  
pp. 321-331 ◽  
Author(s):  
Michael J. O’Brien ◽  
Courtney E. Gomola ◽  
Thomas R. Horton

2018 ◽  
Vol 24 (2) ◽  
Author(s):  
SUPRIYA DIXIT ◽  
R. K. GUPTA

Currently, a real challenge for the workers in the agricultural research field is to stop or reduce the use of expensive agrochemicals/ chemical fertilizers which are hazardous to the environment as well as human health. Present study was aimed to improve the growth and obtain optimum yield of Vigna crop with eco-friendly, non-toxic way and to reduce the use of agrochemical/chemical fertilizer application in agricultural activities. A pot experiment was conducted to study the effect of chemical fertilizer (DAP) and biofertilizer ( Rhizobium strain) separately and in combination on seed germination and seedling growth (at 30 days) based on morphological parameters such as seedling length (cm), fresh weight (g), dry weight (g) and leaf area (cm)2 of Vigna radiata (L.) Wilczek. After one month (30 Days) observations, it was found that seedling length, fresh and dry weights and leaf area were maximum in T4 and minimum in T15, T7 and T8 favored improved seedling length and leaf area whereas T7, T8, and T9 favored improved fresh and dry weights as compared to control.


Author(s):  
K.H. Widdup ◽  
T.L. Knight ◽  
C.J. Waters

Slow establishment of caucasian clover (Trifolium ambiguum L.) is hindering the use of this legume in pasture mixtures. Improved genetic material is one strategy of correcting the problem. Newly harvested seed of hexaploid caucasian clover germplasm covering a range of origins, together with white and red clover and lucerne, were sown in 1 m rows in a Wakanui soil at Lincoln in November 1995. After 21 days, the caucasian clover material as a group had similar numbers of emerged seedlings as white clover and lucerne, but was inferior to red clover. There was wide variation among caucasian clover lines (48-70% seedling emergence), with the cool-season selection from cv. Monaro ranked the highest. Recurrent selection at low temperatures could be used to select material with improved rates of seedling emergence. Red clover and lucerne seedlings produced significantly greater shoot and root dry weight than caucasian and white clover seedlings. Initially, caucasian clover seedlings partitioned 1:1 shoot to root dry weight compared with 3:1 for white clover. After 2 months, caucasian clover seedlings had similar shoot growth but 3 times the root growth of white clover. Between 2 and 5 months, caucasian clover partitioned more to root and rhizome growth, resulting in a 0.3:1 shoot:root ratio compared with 2:1 for white clover. Both clover species had similar total dry weight after 5 months. Unhindered root/ rhizome devel-opment is very important to hasten the establishment phase of caucasian clover. The caucasian clover lines KZ3 and cool-season, both selections from Monaro, developed seedlings with greater shoot and root growth than cv. Monaro. KZ3 continued to produce greater root growth after 5 months, indicating the genetic potential for improvement in seedling growth rate. Different pasture estab-lishment techniques are proposed that take account of the seedling growth characteristics of caucasian clover. Keywords: establishment, genetic variation, growth, seedling emergence, Trifolium ambiguum


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